Greene County, IL Water Table Trend
Greene County, IL: the closest actual trend
Scott County, IL, 20 miles from Greene County, is the closest county with a qualifying well, and its water table is declining, slower than most declining counties.
No well inside Greene County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Greene County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Scott County, IL's full page. See the no-data guide for why a county this close to a qualifying well still doesn't get its own number.
About Greene County
Greene County, Illinois covers 543 square miles and is home to about 11,417 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Greene County isn't one of them yet, see the methodology guide for the exact qualifying bar.